Enum ContextType 

pub enum ContextType {
    Span,
    Expression,
    TableLiteral,
    ArrayLiteral,
    VectorLiteral,
    FunctionLiteral,
    ClassLiteral,
    CallArgumentList,
    Statement,
    BlockStatement,
    IfStatement,
    IfStatementCondition,
    WhileStatement,
    WhileStatementCondition,
    DoWhileStatement,
    DoWhileStatementCondition,
    SwitchStatement,
    SwitchStatementCondition,
    ForStatement,
    ForStatementCondition,
    ForeachStatement,
    ForeachStatementCondition,
    TryCatchStatement,
    TryCatchStatementCatchName,
    ReturnStatement,
    YieldStatement,
    ThrowStatement,
    ThreadStatement,
    DelayThreadStatement,
    WaitThreadStatement,
    WaitThreadSoloStatement,
    WaitStatement,
    GlobalStatement,
    ClassDefinition,
    EnumDefinition,
    FunctionDefinition,
    ConstDefinition,
    VarDefinition,
    StructDefinition,
    TypeDefinition,
    Property,
    Constructor,
    Method,
    FunctionParamList,
    FunctionEnvironment,
    FunctionCaptureList,
    Type,
    GenericArgumentList,
}

Context information that can be attached to a ParseError.

Essentially, if an error has a context, it means that the parser knows that the error is inside some specific syntactical construct.

This is intended to hint at the state of the parser to make syntax errors and parser debugging a bit easier.

Implements std::fmt::Display to write a useful description of the context.

Variants

Span

A span of something. This should generally be replaced with a more specific context.

Expression

An expression with a value and an operator.

Example

(1 + 5) * 3--
^^^^^^^   ^^^ expression
^^^^^^^^^^^^^ expression

TableLiteral

Literal defining a table.

Example

local ages = SumAges({ Charlie = 28, Maeve = 23 })
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ table literal

ArrayLiteral

Literal defining an array.

Example

local cities = ["Adelaide", "Sydney"].join(", ")
               ^^^^^^^^^^^^^^^^^^^^^^ array literal

VectorLiteral

Literal defining a 3D vector.

Example

player.LookAt(< -5.2, 0.0, 10.0 >)
              ^^^^^^^^^^^^^^^^^^^ vector literal

FunctionLiteral

Literal defining an anonymous function.

Example

local writeVal = function() { }
                 ^^^^^^^^^^^^^^ function literal

ClassLiteral

Literal defining an anonymous class.

Example

local ageManager = class { Ages = ages }
                   ^^^^^^^^^^^^^^^^^^^^^ class literal

CallArgumentList

List of arguments in a function call.

Example

player.SayTo(friend, "Hello there!")
             ^^^^^^^^^^^^^^^^^^^^^^ call arguments

Statement

A statement in a program or block.

Example

local name = "squirrel"
^^^^^^^^^^^^^^^^^^^^^^^ statement

BlockStatement

A block statement, containing multiple sub-statements.

Example

local count = 6;
  {
 _^
|     log("hello");
| }
|_^ block statement
log("world");

IfStatement

All of an if statement.

Example

  local isTimedOut = player.IsTimedOut()
  if (isTimedOut && player.IsAlive()) {
 _^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|     player.Kill()
| }
|_^ if statement
```text

IfStatementCondition

The condition in an if statement.

Example

if ( IsLoggedIn() ) LogOut()
   ^^^^^^^^^^^^^^^^ if statement condition

WhileStatement

All of a while statement.

Example

  while (!IsDay()) {
 _^^^^^^^^^^^^^^^^^^
|     Sleep();
| }
|_^ while statement
  WakeUp();

WhileStatementCondition

The condition of a while statement.

Example

while (!isDone) Continue()
      ^^^^^^^^^ while statement condition

DoWhileStatement

All of a do while statement.

Example

  do {
 _^^^^
|     Shoot();
| } while ( IsButtonDown() )
|_^^^^^^^^^^^^^^^^^^^^^^^^^^ do while statement

DoWhileStatementCondition

The condition of a do while statement.

Example

do {
    train()
} while (fitness < 10)
        ^^^^^^^^^^^^^^ do while statement condition

SwitchStatement

All of a switch statement.

Example

  switch (state) {
 _^^^^^^^^^^^^^^^^
|     case "playing": play(); break;
|     cause "paused": pause(); break;
| }
|_^ switch statement

SwitchStatementCondition

The condition of a switch statement.

Example

switch ( GameMode() ) {
       ^^^^^^^^^^^^^^ switch statement condition
    case "slayer":
        return;
    case "creative":
        SetHealth(100);
        break;
}

ForStatement

All of a for statement.

Example

  for (local i = 0; i < 10; i++) {
 _^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|     println(i)
| }
|_^ for statement

ForStatementCondition

The condition of a for statement.

Example

for (local i = 0; i < players.len; i++) {
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ for statement condition
    players[i].say("hello")
}

ForeachStatement

All of a foreach statement.

Example

  foreach (i, video in videos) {
 _^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|     println("playing " + i)
|     play(video)
| }
|_^

ForeachStatementCondition

The condition of a foreach statement.

Example

foreach (Map map in maps) {
        ^^^^^^^^^^^^^^^^^ foreach statement condition
    map.load()
    println("loaded map: " + map.name)
}

TryCatchStatement

All of a try catch statement.

Example

  try {
 _^^^^^
|     FetchData()
| } catch (error) {
|     println("could not fetch data: " + error)
| }
|_^ try catch statement

TryCatchStatementCatchName

The catch binding in a try catch statement.

Example

try {
    money += withdraw(500)
} catch (error) {
        ^^^^^^^ try catch statement catch name
    println(error)
}

ReturnStatement

A return statement in a function.

Example

return rnd(0, 10)
^^^^^^^^^^^^^^^^^ return statement

YieldStatement

A yield statement in a generator function.

Example

foreach (player in players) {
    yield player.health
    ^^^^^^^^^^^^^^^^^^^ yield statement
}

ThrowStatement

A throw statement.

Example

if ( !request.success ) {
    throw "Request Failed"
    ^^^^^^^^^^^^^^^^^^^^^^ throw statement
}

ThreadStatement

A thread statement.

Example

thread PostmatchScreen()
^^^^^^^^^^^^^^^^^^^^^^^^ thread statement

DelayThreadStatement

A delaythread statement.

Example

delaythread(10) alert("times up!")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ delay thread statement

WaitThreadStatement

A waitthread statement.

Example

waitthread readAllFiles()
^^^^^^^^^^^^^^^^^^^^^^^^^ wait thread statement

WaitThreadSoloStatement

A waitthreadsolo statement.

Example

waitthreadsolo WaitForPlayerExitButtonPressed( player )
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ wait thread solo statement

WaitStatement

A wait statement.

Example

println("3")
wait 1
^^^^^^ wait statement
println("2")

GlobalStatement

A global statement.

Example

global MaxThreads = 10
^^^^^^^^^^^^^^^^^^^^^^ global statement

ClassDefinition

Class definition.

Example

  class Person {
 _^^^^^^^^^^^^^^
|     alive = true
|     constructor(name) {
|         this.name <- name
|     }
| }
|_^ class definition

EnumDefinition

Enum definition.

Example

  enum GameMode {
 _^^^^^^^^^^^^^^^
|     SURVIVAL,
|     CREATIVE,
|     ADVENTURE,
| }
|_^ enum definition

FunctionDefinition

Function definition.

Example

  void function Damage( entity player ) {
 _^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|     player.health -= 5
| }
|_^ function definition
  Damage( me )

ConstDefinition

Constant value definition.

Example

const MaxHealth = 10;
^^^^^^^^^^^^^^^^^^^^^ const definition
player.health = MaxHealth

VarDefinition

Variable definition.

Example

local cities = ["Adelaide", "Sydney"]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ variable definition

StructDefinition

Struct definition.

Example

  struct Waypoint {
 _^^^^^^^^^^^^^^^^^
|     float x,
|     float y,
|     string name
| }
|_^ struct definition

TypeDefinition

Type definition.

Example

typedef PlayerMap table<string, player>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type definition

Property

Property in a class, table, or struct.

Example

class Player {
    isPlaying = true
    ^^^^^^^^^^^^^^^^ class property
}

Constructor

Constructor in a class or table.

Example

  class FunMachine() {
      constructor() {
 _____^^^^^^^^^^^^^^^
|         this.funLevel <- 11
|     }
|_____^ class constructor
  }

Method

Method in a class or table.

Example

  class FooCalculator {
      int function calculateFoo() {
 _____^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|         return 4
|     }
| }
|_^ class method

FunctionParamList

Function definition’s parameter list.

Example

function foobar(int a, string b = "no", ...) {
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function param list
}

FunctionEnvironment

Function environment definition.

Example

local person = { age = 32 }
function printPersonDetails[person]() {
                           ^^^^^^^^ function environment
    println(this.age)
}

FunctionCaptureList

Function free variable/capture list.

Example

filterFunc = function(val) : (max) {
                             ^^^^^ function capture list
    return val <= max
}

Type

A type with an optional number of type modifiers.

Example

table<string, person&> ornull
^^^^^ ^^^^^^  ^^^^^^          type
              ^^^^^^^         type
^^^^^^^^^^^^^^^^^^^^^^        type
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type

GenericArgumentList

List of arguments in a generic type.

Example

table<string, country>
     ^^^^^^^^^^^^^^^^^ generic argument list

Trait Implementations

impl Clone for ContextType

fn clone(&self) -> ContextType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ContextType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ContextType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ContextType

fn eq(&self, other: &ContextType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ContextType

impl Eq for ContextType

impl StructuralPartialEq for ContextType